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Segment and Related Information - Schedule of Total Operating Income for Continuing Reportable Segments (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |
Total operating income for reportable segments | $ 36,342 us-gaap_OperatingIncomeLoss | $ 82,999 us-gaap_OperatingIncomeLoss | $ 62,262 us-gaap_OperatingIncomeLoss | $ 165,903 us-gaap_OperatingIncomeLoss
Interest income | 85 us-gaap_InvestmentIncomeInterest | 1,330 us-gaap_InvestmentIncomeInterest | 140 us-gaap_InvestmentIncomeInterest | 2,691 us-gaap_InvestmentIncomeInterest
Other | 1,513 us-gaap_OtherNonoperatingIncomeExpense | (185)us-gaap_OtherNonoperatingIncomeExpense | 1,416 us-gaap_OtherNonoperatingIncomeExpense | (623)us-gaap_OtherNonoperatingIncomeExpense
Income tax provision | 13,909 us-gaap_IncomeTaxExpenseBenefit | 33,784 us-gaap_IncomeTaxExpenseBenefit | 23,805 us-gaap_IncomeTaxExpenseBenefit | 62,146 us-gaap_IncomeTaxExpenseBenefit
Net income | $ 24,031 us-gaap_NetIncomeLoss | $ 50,360 us-gaap_NetIncomeLoss | $ 40,013 us-gaap_NetIncomeLoss | $ 105,825 us-gaap_NetIncomeLoss

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(b)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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